<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script type="text/javascript" src="入口.js" defer></script>
    <link rel="stylesheet" href="样式.css">
</head>
<body>
    <div class="画布容器">
        <canvas class="画布">
            <p>回退信息</p>
        </canvas>
    </div>
</body>
</html>